The unrestrained liberty of thought, claimed by so many Protestant reformers and theologians and ending as it did in the substitution of a natural for a supernatural religion, could not fail to have an influence in Catholic circles. Many Catholic scholars were close students of the philosophical systems of Wolf and Kant in Germany, and of the writings of the Encyclopaedists in France. They were convinced that Scholasticism, however valuable it might have been in the thirteenth century, was antiquated and out of harmony with modern progress, that it should be dropped entirely from the curriculum of studies, and with it should go many of the theological accretions to which it had given rise. Catholicism, it was thought, if it were to hold the field as a world-wide religion, must be remodelled so as to bring it better into line with the conclusions of modern philosophy. Less attention should be paid to dogma and to polemical discussions, and more to the ethical and natural principles contained in the Christian revelation. The spread of Gallicanism and Febronianism and the adoption of these views by leading rulers and politicians, thereby weakening the authority of the Pope and of the bishops, helped to break down the defences of Catholicity, and to make it more easy to propagate rationalistic views especially amongst those who frequented the universities. As a rule it was only the higher and middle classes that were affected by the /Aufklarung/. Everywhere throughout Europe, in France, in Spain, in Portugal, in Germany, and in Austria this advanced liberalism made itself felt in the last half of the eighteenth century, particularly after the suppression of the Jesuits had removed the only body capable of resisting it successfully at the time, and had secured for their opponents a much stronger hold in the centres of education. It was in Germany and Austria that the /Aufklarung/ movement attracted the greatest attention. The Scholastic system of philosophy had been abandoned in favour of the teaching of the Leibniz-Wolf school and of Kant. The entire course of study for ecclesiastical students underwent a complete reorganisation. Scholasticism, casuistry, and controversy were eliminated. Their places were taken by Patrology, Church History, Pastoral Theology, and Biblical Exegesis of the kind then in vogue in Protestant schools.